french pitch การใช้

As was the case in many of her performances, most of Melba's recordings were made at " French Pitch " ( A = 435 Hz ), rather than the British early 20th century standard of A = 452 Hz, or the modern standard of A = 440 Hz.
The competition pits not only America against Europe _ " Are you European or American ? " is part of the French pitch _ but American companies against American companies, and even the U . S . Air Force, which flies the F-16, against the U . S . Navy, which uses the F-18.